Multiple angle hydraulic riveting attachment



Patented Apr. 17, 1945 UNITED STATES PATENT OFFICE MULTIPLE ANGLE HYDRAULICl RIVETING ATTACHMENT u Nicholas Moreno, Baltimore, Md. ,Application December 21, 1942, serial No. 469,727

' 5 claims. (cl. 12s-34) This invention refers to toolsv and more particularly to those belonging to the riveting and chiseling branches of mechanical equipment. The object of this invention is to provide a tool applicator attachable to a tool gun, that will ture of the applicator, to permit it to be bent and turned around readily to suit all ythe requirements met with in practical operation. Still anotherobject is to have the construction relatively light and portable, free from complicated or accumulative mechanism; economical to o-p-` crate; inexpensive to keep in repair, and simple to inspect, assemble and disassemble.

Other objects will become apparent as vthe invention is more fully set forth.

The tool guns conventionally employed for riveting and the like, in airplane and mechanical construction hold the tool close to the main holder or tool head and require direct application to the article part or machine acted upon. Where the rivet or part is at the end of' a narrow passage or is inconvenient to reach,r an extending rod is frequently used for the tool to strike on and hit the rivet indirectly. This is partly successful, when the rivet is in a direct line with the operating axis of the tool. When the rivet is located at a turn that cannot be properly reached even by the extension, then the difficulties arise and any riveting done is on a makeshift style. The rivets are partly riveted, with the heads half sheared off and otherwise mutilated, which frequently require additional labor and eiTort to make them passable. This may require the removal and replacement of a rivet several times, and involves time, trouble and expense and enlarges the rivet hole to such an extent that Ia larger rivet must be used to fill up the hole. This invention can apply the tool at practically every angle or at a distance from the gun properand will do its work effectively. The structure of this applicator consists of an attachment for the too1 head of a tool gun, having a iiexible carrier or tube lled with fluid and piston members at each end arranged to transmit the impulses of force applied thereto. The use of a liquid or uid enables the impulses or blows to be transmitted with little loss of power; avoids the use of mechanism, and permits the device to be bent Iand turned to any angle, without loss of eiiiciency, to conform with any usual requirements involved in riveting or chiseling, etc. at a distance or at an angle to the main tool gun.l Y

In the drawing which illustrates an example of this invention:

Figure l represents a side elevation of an applicator embodying this invention, Iattached to a conventional air riveting hammer.

Figure 2 is an elevation view of the invention shown in Figure l, and taken along line 2-2 thereof, to show the general outline of the tool head, flexible hose and tool head holding attachment, and Y Figure 3 represents a longitudinal section through an applicator attached to a conventional tool head of an air riveting hammer or gun shown in Figure 1.

Similar reference characters refer to similar parts throughout the drawing. f

In the construction shown, l represents a conventional pneumatic hammer gun used for riveting, Withits tool head 2 adapted for holding the various hammers, chisels and other tools customarily used with it. The too1 head 2 has external peripheral surface grooves 3 adjacent the end fora retaining spring 30 which is coiled thereon and keeps the tools employed from being thrown out of the head during the operation of the hammer gun. The head 2 has an oscillating power transmitting plunger l reciprocating Within it which contacts a hammer 5 a short distance in y front of same. The retaining spring 3l) is removed when the applicator is to be attached.

The applicator is then attached by screwing its cylinder sleeve 6 over the tool head 2 and having its internal screw-threads 'l engaged vin the grooves 3 where the retaining spring was originally connected to. This sleeve is screwed o-n until its internal ledge 8 strikes the end face 9 .of the too1 head and both are held rigidly to- The sleeve is internally ground at lll to provides. suitable surface for its piston ll to regether.

ciprocate in. This piston is in contact with the hammer head E of the gun and is operated thereby. An internal coil spring l2 in the' cylinder tensions against the piston I l and keeps it in contact with the hammer 5 which forces it out,

at each blow when operated by the. motive power used to operate the gun.

The piston is preferably constructed as indicated with a cup-shaped end Iill to centralize it in its travel in the cylinder and is provided with rings I3 to keep it liquid tight. The spring I2 is held in the internal portion of the sleeve through the use of a ridge I4 and connection I5. The sleeve is tapered at I6 and is restricted in size to conform with the diameter of the piston II. A flexible tubing I'I is attached to the exterior peripheral surface Iii of the sleeve connector 38 in any suitable manner, that keeps it liquid tight. The flexible tu-bing is made as long assuitable for its employment. The other end of the tubing is attached to a sleeve connector 38 which connects with tool holder I9 which is formed with a right angle bend 28 toy portray its use for angular riveting. It has a piston 2I within it that is operated from the liquid 22 filling the tubing I`I and the sleeves between the pistons. The piston 2l has rings 23 to make it iluid tight and its structure is preferably as indicated in the drawing. A ridge 24 in the sleeve keeps the piston in its proper posie tion in the cylinder even should some of the liquid leak out. The internal surface of the sleeve I9 is. adapted for holding a coil spring 29 which keeps the piston under tension against the fluid in the device. The external end portion 26 of the sleeve I9 is arranged with peripheral surface grooves 25 similar to those providedVV at 3 on the gun, and for the same purpose. The spring 30 of the gun is removed from the tool head 2 and placed on the sleeve end 26 to hold any tool 2l employed in each case, in the mouth portion 28 o f the tool holder i9. This is done similarly to the manner in which the tools are held in the conventional tool head.A The tool 2,1 ts within the sleeve head I9 and is actuated similarly to its conventional manner by the piston 2|. The spring 3|) keeps the tool 21 used in contact with the hammer portion 3l of the piston 2l, which is held in the mouth portion 28 arranged in this tool holder sleeve, as indicated.

The chamfer end of the piston I I contacts the hammer 5, its extension member 3 5 projects into the tool head 2 and is oscillated back and kforth by the power transmitter 4.' The piston2I is provided at one of its ends with ahammer portion 31 which transmits oscillating power to the rivet set 21 which acts on therivet head 3S.

In thev operation of the device the'iiuid 22 is placed in the device under pressure through' the use of a filler valve connection 4l and the trapped air is released through relief valve 42. The spring 30 is vthen removed from the tool head 2 of a riveting gun I and the rivet set removed, the cylinder sleeve 6 is then screwed tightly on the tool head 2 and the rivet set is placed in the end of the angular tool holder I9 and the retaining spring 3G screwed into place thereon.

The motive power 43 is then attached to the riveting gun I and the trigger 44 operated, this causes the gun t operate in the usual manner. The power transmitter 4 oscillates back and forth, striking the extensionmember 35 ofthe hammer which in turn operates the piston II. The piston II transmits itsforce to the liquid 22 which in turn transmits its force to the secondary pistonV 2I and through its hammer portion 37 actuates the rivet set 21 in the mouth portion 2S of the sleeve I9 and does the work of riveting or operating a chisel, etc. It may be seen that the tool may be used to contact parts or rivets that are placed at points that are hard as to access or at difficult angles withas much efficiency as if the ordinary StraightriVet hammer or gun had been used. The angular tool holder I 9 is also provided with an attachment 45 into which a screw-dn'ver or bar 46 may be inserted to hold the riveting attachment against the rivet in places heretofore inaccessib1e.- The liquid through its iiexibility, non-compressibility and relative lightness (as compared with suitable metals), transmits the full power from the gun to the parts to be worked on. The device can be bent readily to meet any particular requirements at an instant, because of the flexibility of the tubing.

While but one form of the invention is indicated in the drawing, it is not desired to limit this application for patent to such particular construction or its specic use, as it is appreciated that other forms of construction could be used that would use the same principles and come within the scope of the appended claims.

Having thus described the invention, what is claimed is:

1. An applicator for attach-ment to the tool head of a vibratory gun, comprising in combination, a hollow sleeve attachable to the tool head of the gun with its hammer projecting therein, a piston reciprocable in the sleeve with a cup shaped centralizing head and adapted to contact the said hammer and operate therewith, a coil spring member in contact with the piston and an internal portion of the sleeve so as to cooperate with the operation of the piston by thesaid hammer, a hollow sleevev connector adjustably attached to the said sleeve and adapted to keep thesaid member in position and adjustably tensioned, a flexible tubing attached to the connector, a holder arranged to contain a percussive tool in the end portion thereof attached to the said tubing, a piston in one end portion of the said holderV arranged to reciprocate' therein, a resilient member-in the holder in 'Contact with the piston and adaptedto resiliently return it in one direction, and a liquid in the sleeve, connector, tubing and holder for transmitting percussive power from the hammer through the pistons to the said tool.

2. An applicator for attachment to the tool head of a vibratory gun, comprising incomlhination, a hollow sleeve attachalble to the tool head of the gun, with its hammer projecting therein, a piston reciprocablein the sleeve with a cup shaped centralizing head andadapted to contact the said hammer` and operate therewith, a coil spring member in contact with the piston andan internal portion of the sleeve so as to cooperate with the operation of the piston lby the said hammer, a hollowl sleeve connector adjustably attached to the said sleeve and adapted. to'keep the said member in positionand adiustably. ten. sioned, a flexible tubing attached to theV connector, a'holderarranged to-contain afpercussive tool in the end portion thereof. attached to the said tubing, a :piston in one end portion of the said holderA arranged to reciprocate therein, a resilient member in the holder in-contact with the piston and adapted to resiliently returnit` in one direction, and a liquid inthe sleeve, con,- nector, tubing andholder for transmitting percussive power from the hammer throughthe pistons to the said tool, and a. coil spring member mountable on the periphery of the holder and projecting beyond same sowas to engage the. said tool and hold it in predetermined4 relation` to the holder and piston.

3. An applicator for attachment tothe tool head of a vifbratory. gun, comprisingin combination,l a sleeverattachablejto: the tool head of the gun with its hammer projecting therein, a piston .reciprocalble in the sleeve and adapted to con' said holder arranged to reciprocate therein, a`

resilient member in the holder in Contact With the piston and adapted to resiliently return it in one direction, and a liquid in the holder for transmitting percus-sive power lfrom the hammer through the pistons to the said tool.

4. An applicator for attachment to the tool head of a viibratory gun, comprising in combination, a sleeve attachable to the tool head of the gun with its hammer projecting therein, a piston reciprocable in the sleeve and adapted to `contact the said hammer and operate therewith, Ya spring member in contact with the piston and a portion of the sleeve so as to cooperate with theoperation of the piston by the said hammer,l a sleeve connector attached to the said sleeve and adapted to keep the said member inposition and tensioned, a tubing attached to the connector, a holder arranged to contain a tool in the end piston in lone end portion of the said holder arf rangedv to reciprocate therein, a memlber in the holder in Contact with the piston and adapted to return it in one direction, and a liquid in the holder for transmitting percussive power from the hammer through the pistons to the said tool.

5. .An applicator for attachment to the tool head of a vibratory gun, comprising in combination, a sleeve attachable tothe tool head of the gun with its hammer projecting therein, a piston reciprocable inthe sleeve and adapted to contact the said hammer and operate therewith, a spring member in contact with the piston and a portion of the sleeve so as to cooperate with the operation of the piston by the said hammer, a sleeve connector attached to the said sleeve and 'adapted to keep the said member in lposition and tensioned, a tubing attached to the connector, a

l holder arranged to contain a tool inthe end porso as to engage the said tool and hold it in prethe holder.

determined relation to n NICHOLAS MORENO. 

